Title: Voltage-controlled spin injection in a (Ga,Mn)As/(Al,Ga)As Zener diode
Authors: Van Dorpe, Pol ×
Van Roy, W
De Boeck, J
Borghs, Gustaaf
Sankowski, P
Kacman, P
Majewski, JA
Dietl, T #
Issue Date: Nov-2005
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review B, Condensed Matter vol:72 issue:20
Article number: 205322
Abstract: The spin polarization of the electron current in a p-(Ga,Mn)As/n-(Al,Ga)As Zener tunnel diode, which is embedded in a light-emitting diode, is studied theoretically. A series of self-consistent simulations determines the charge distribution, the band bending, and the current-voltage characteristics for the entire structure. In order to study the current spin effects the spin dependent tight-binding Hamiltonian is implemented into the Landauer-Buttiker scheme. This dual approach allows us to describe the experimentally observed high magnitude and strong bias dependence of the current spin polarization.
ISSN: 0163-1829
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics and Astronomy - miscellaneous
Associated Section of ESAT - INSYS, Integrated Systems
× corresponding author
# (joint) last author

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